US 11,456,845 B2Granted

Method and device for signal transmission or reception on basis of LTE and NR in wireless communication system

AssigneeLG Electronics Inc.

InventorsYoungtae Kim, Yunjung Yi, Hyunho Lee, Daesung Hwang

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Abstract

The present invention relates to a method for signal transmission or reception by a terminal dual-connected to a first radio access technology (RAT) or a second RAT in a wireless communication system. Specifically, the method comprises: a step of receiving a first RAT-based downlink reference time domain duplex (TDD) uplink-downlink configuration; and a time division multiplexing (TDM) step of, when an uplink subframe on the basis of the downlink reference TDD uplink-downlink configuration is associated with a first transmission time unit having a predetermined length, setting the first transmission time unit for the first RAT and setting a second transmission time unit for the second RAT. The second transmission time unit is obtained by excluding a transmission time unit from the uplink subframe. The terminal is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.

Claims4

Dependent claims

A method for transmitting and receiving a signal by a terminal dual-connected to a first Radio Access Technology (RAT) and a second RAT in a wireless communication system, the method comprising:

receiving a downlink reference Time Domain Duplex (TDD) uplink-downlink (UL/DL) configuration based on the first RAT;
and
performing time division multiplexing (TDM) of configuring a first transmission time unit for the first RAT and configuring a second transmission time unit for the second RAT in an uplink subframe,
wherein the first RAT is Frequency Domain Duplex (FDD)-based Long Term Evolution (LTE),
wherein the second RAT is New Radio Access Technology (NR),
wherein based on that the uplink subframe based on the downlink reference TDD UL/DL configuration is related to the first transmission time unit having a predetermined length, the second transmission time unit except the first transmission time unit is configured for the second RAT in the uplink subframe,
wherein, based on there being one short-transmission time interval (sTTI) in the uplink subframe:
the uplink subframe is determined based on Hybrid Automatic Repeat Request (HARD) timing for carrier aggregation of an LTE-based TDD Primary Cell (Pcell) and an FDD Secondary Cell (Scell)
an uplink signal is transmitted in the first transmission time unit, which is configured for the first RAT which is FDD-based LTE, in the uplink subframe,
the first transmission time unit is the one sTTI in the uplink subframe
wherein the HARQ timing related to the first transmission time unit is determined according to a preset value of K, where K is a natural number, and
wherein the preset value of K depends on (i) the downlink reference TDD UL/DL configuration and (ii) a time unit index n of the first transmission time unit in which the uplink signal is transmitted, according to:
TDD
UL/DL
time unit index n
Conf.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
0
8, 4
8, 4
8, 4
8, 4
4
4
8, 4
8, 4
8, 4
8, 4
4
4
1
10, 6,
10, 5,
10, 4
10, 4
10, 6,
10, 5,
10, 4
10, 4
5
4
5
4
2
10, 8,
10, 7,
10, 8,
10, 7,
7, 12,
6, 5,
7, 12,
6, 5,
11
4
11
4
3
18, 14,
18, 12,
18, 10,
18, 9,
8, 7,
7, 6,
13, 12
11, 10
9
8
4
4
4
17, 16,
17, 13,
17, 10,
17, 7,
15, 14,
12, 11,
9, 8,
6, 5,
13
10
7
4
5
19, 18,
21, 12,
17, 16,
11, 10,
15, 14,
9, 8,
13, 12,
7, 6,
22, 21
5, 4
6
10, 6
10, 6
10, 6
10, 6
6, 4
6, 4
6, 4
6, 4
8, 4
8, 4
wherein (n−K) is a time unit index of receiving an uplink grant that schedules transmission of the uplink signal.

121 more elements

A terminal for transmitting and receiving a signal while being dual-connected to a first Radio Access Technology (RAT) and a second RAT in a wireless communication system, the terminal comprising:

a radio frequency unit;
and
a processor,
wherein the processor is configured to:
receive a downlink reference Time Domain Duplex (TDD) uplink-downlink (UL/DL) configuration based on the first RAT;
and
configure a first transmission time unit for the first RAT and configure a second transmission time unit for the second RAT in an uplink subframe,
wherein the first RAT is a Frequency Domain Duplex (FDD)-based Long Term Evolution (LTE) band,
wherein the second RAT is New Radio Access Technology (NR),
based on that the uplink subframe based on the downlink reference TDD UL/DL configuration is related to a first transmission time unit having a predetermined length, the second transmission time unit is configured for the second RAT in the uplink subframe except the first transmission time unit,
wherein, based on there being one short-transmission time interval (sTTI) in the uplink subframe:
the uplink subframe is determined based on Hybrid Automatic Repeat Request (HARQ) timing for carrier aggregation of an LTE-based TDD Primary Cell (Pcell) and an FDD Secondary Cell (Scell)
an uplink signal is transmitted in the first transmission time unit, which is configured for the first RAT which is FDD-based LTE, in the uplink subframe,
the first transmission time unit is the one sTTI in the uplink subframe,
wherein the HARQ timing related to the first transmission time unit is determined according to a preset value of K, where K is a natural number, and
wherein the preset value of K depends on (i) the downlink reference TDD UL/DL configuration and (ii) a time unit index n of the first transmission time unit in which the uplink signal is transmitted, according to:
TDD
UL/DL
time unit index n
Conf.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
0
8, 4
8, 4
8, 4
8, 4
4
4
8, 4
8, 4
8, 4
8, 4
4
4
1
10, 6,
10, 5,
10, 4
10, 4
10, 6,
10, 5,
10, 4
10, 4
5
4
5
4
2
10, 8,
10, 7,
10, 8,
10, 7,
7, 12,
6, 5,
7, 12,
6, 5,
11
4
11
4
3
18, 14,
18, 12,
18, 10,
18, 9,
8, 7,
7, 6,
13, 12
11, 10
9
8
4
4
4
17, 16,
17, 13,
17, 10,
17, 7,
15, 14,
12, 11,
9, 8,
6, 5,
13
10
7
4
5
19, 18,
21, 12,
17, 16,
11, 10,
15, 14,
9, 8,
13, 12,
7, 6,
22, 21
5, 4
6
10, 6
10, 6
10, 6
10, 6
6, 4
6, 4
6, 4
6, 4
8, 4
8, 4
wherein (n−K) is a time unit index of receiving an uplink grant that schedules transmission of the uplink signal.

125 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/652,313Filed 2 Oct 2018 · us provisional application
Priority: 2 Oct 2017
Published: US 2020/0235903 A123 Jul 2020
Granted: 27 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 5/14
Arrangements affording multiple use of the transmission path: two-way operation using the same type of signal, i.e. duplex
H04W 72/1215
Wireless traffic scheduling: for collaboration of different radio technologies
H04L 1/1812
Automatic repetition systems, e.g. Van Duuren systems: hybrid protocols; Hybrid automatic repeat request [HARQ]
H04W 16/02
Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures: resource…

Family

Application62/566,566Us provisional application · filed 2 Oct 2017
Application62/588,223Us provisional application · filed 17 Nov 2017
Application62/592,336Us provisional application · filed 29 Nov 2017
Application62/619,134Us provisional application · filed 19 Jan 2018
US 2020/0235903 A1Pre-grant publication · published 23 Jul 2020
US 11,456,845 B2This patent

From the US filing history. Foreign family members aren’t listed.